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Peningkatan Pemahaman Konsep Bilangan dan Pengukuran melalui Media Konkret Buah Pumpkin pada Siswa Kelas 2 SD Suwarni Suwarni; Diah Selviani; Dewi Suranti
DIAJAR: Jurnal Pendidikan dan Pembelajaran Vol. 4 No. 4 (2025): Oktober 2025
Publisher : Yayasan Pendidikan Penelitian Pengabdian Algero

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54259/diajar.v4i4.5958

Abstract

This study aims to improve the understanding of the concept of numbers and measurement through concrete media of pumpkins in grade 2 elementary school students and analyze the process and results of exploration of the concept of measurement and counting carried out by Shelton Elementary School students.. Mathematics education at the Elementary School (ES) level requires concrete media to bridge abstract concepts toward real understanding. The method used is descriptive qualitative, which focuses on in-depth observation and interpretation of phenomena in their natural setting. The pumpkin medium was chosen due to its abundant availability and its relevance to the local autumn context in Colorado, making it a familiar and engaging object for students. This medium was integrated into learning to visualize number concepts (counting seeds), measurement (circumference and weight), and simple arithmetic operations (addition and subtraction). This descriptive qualitative research involved 18 Grade 2 students and 7 parents as volunteers at Shelton Elementary School, Golden, Colorado, USA, on Wednesday, October 22, 2025. Data were collected through participatory observation and field notes on group activities where students performed measurements of the pumpkin's circumference, height, weight, and counted the number of seeds. The results show that the use of the pumpkin medium successfully created a fun and contextual learning atmosphere, increased student motivation, and trained their estimation and actual measurement skills. Interaction with the pumpkin and collaboration with parent volunteers also strengthened students' understanding of number and unit concepts.
Konsep Model Pembelajaran Tipe Jigsaw Berbasis Lesson Study Terhadap Kemampuan Critical Thinking Mahasiswa Citra Dewi; Rita Prima Bendriyanti; Diah Selviani
Sustainable Vol. 4 No. 2 (2021): Sustainable
Publisher : Lembaga Penjaminan Mutu, IAIN Syaikh Abdurrahman Siddik Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32923/kjmp.v4i2.2840

Abstract

Penelitian ini bertujuan untuk mendeskripsikan model pembelajaran tipe jigsaw berbasislesson study terhadap kemampuan critical thinking Mahasiswa. Pada mata kuliah Belajar Pembelajaran. Panelitian ini adalah kualitatif dengan metode deskriptif. Subjek penelitian adalah Mahasiswa Penjas Universitas Dehasen Bengkulu. Data penelitian ini adalah pelaksanaan plan, do, dan see. Selanjutnyta, dilakukannya teknik triangulasi. Keabsahan data dilakukan melalui triangulasi. Berdasarkan hasil penelitian dapat disimpulkan bahwa konsep model pembelajaran ini menggunakan model jigsaw berbasis lesson study yang dilaksanakan sesuai tahapan-tahapan dalam lesson study yaitu plan, do,dan see. Hal ini berdampak baik bagi kemampuan critical thinking Mahaiswa. Pelaksanaan Lesson study merancangperencanaan pembelajaran lebih siap sehingga dalam pelaksanaan pembelajar.